Question

ײ−6×−7=0
₍ ₎ ₍ ₎=0
₍× ₎ ₍×₎=0

Answer 1

Respuesta:

${x}^{2} - 6x - 7 = 0$

Explicación paso a paso:

A= 1. B= -6. C= -7

$x1.2 = \frac{ - b \frac{ + }{ - } \sqrt{ {b}^{2} } - 4 \times a \times c }{2 \times a}$

$x1.2 = \frac{ - ( - 6) \frac{ + }{ - } \sqrt{ {( - 6)}^{2} - 4 \times 1 \times ( - 7) } }{2 \times 1}$

$x1.2 = \frac{6 \frac{ + }{ - } \sqrt{36 + 28} }{2}$

$x1.2 = \frac{6 \frac{ + }{ - } \sqrt{64} }{2}$

$x1 = \frac{6 + 8}{2} = \frac{14}{2} = 7$

$x2 = \frac{6 - 8}{2} = \frac{ - 2}{2} = - 1$